Worm gear double-worm assembly, transmission system, pedal control system and automobile

Abstract

The utility model provides a worm gear double-worm assembly, a transmission system, a pedal control system and an automobile. The worm gear double-worm assembly comprises a first shell, a first worm gear, a first worm, a second worm and a first transmission rod. The first worm gear is rotatably mounted in the first shell; the first worm and the second worm are arranged in the first shell in a spaced mode, the first worm is meshed with one side of the first worm gear, and the second worm is meshed with the other side of the first worm gear. The first transmission rod is installed in the first worm wheel and can move in the axial direction of the first worm wheel. The first worm is used for being connected with a driving motor, the first transmission rod is used for being connected with a first workpiece, and the second worm is used for being connected with a second workpiece. Compared with an existing transmission assembly, the worm gear and double worm assembly can achieve double transmission through one transmission assembly, is simple in structural arrangement, reduces cost, meets use requirements, and is wide in application prospect.

Description

Technical Field

[0001] The utility model relates to the technical field of transmission systems, in particular to a worm gear double-worm assembly, a transmission system, a pedal control system and a car. Background Art

[0002] At present, most of the existing transmission components can only realize one transmission. When two or more transmissions need to be realized, additional transmission components need to be added, which will lead to complex structural layout, high cost, failure to meet usage requirements, and poor practicality. Utility Model Content

[0003] The utility model provides a worm gear double-worm assembly, a transmission system, a pedal control system and a car, so as to solve the problem that most of the existing transmission assemblies can only realize one transmission and cannot meet the use requirements.

[0004] A worm gear double worm assembly comprises a first housing, a first worm gear, a first worm, a second worm and a first transmission rod;

[0005] The first worm gear is rotatably mounted in the first housing;

[0006] The first worm and the second worm are arranged in the first housing at intervals, the first worm is meshed with one side of the first worm wheel, and the second worm is meshed with the other side of the first worm wheel;

[0007] The first transmission rod is installed in the first worm gear, and the first transmission rod can move axially along the first worm gear;

[0008] The first worm is used to be connected to a driving motor, the first transmission rod is used to be connected to a first workpiece, and the second worm is used to be connected to a second workpiece.

[0009] A transmission system comprises a driving motor, a first transmission assembly and the worm gear and double worm assembly;

[0010] The output end of the driving motor is connected to the first worm of the worm gear double worm assembly;

[0011] The first transmission assembly is connected to the second worm of the worm gear double worm assembly, and the first transmission assembly is used to be connected to the second workpiece.

[0012] Preferably, the first transmission assembly is a worm gear single worm assembly, and the worm gear single worm assembly includes a second housing, a second worm gear, a third worm and a second transmission rod;

[0013] The second worm gear is rotatably mounted in the second housing;

[0014] The third worm is disposed in the second housing and meshes with one side of the second worm wheel;

[0015] The second transmission rod is installed in the second worm gear, and the second transmission rod can move axially along the second worm gear;

[0016] The third worm is used to be connected to the second worm of the worm gear double worm assembly, and the second transmission rod is used to be connected to the second workpiece.

[0017] Preferably, the first transmission assembly is a gear rack assembly, and the gear rack assembly includes a third housing, a gear and a rack;

[0018] The gear is rotatably mounted on the third housing and connected to the second worm of the worm gear double worm assembly;

[0019] The rack is movably mounted on the third housing, meshed with the gear, and used to be connected to the second workpiece.

[0020] Preferably, the transmission system further comprises a flexible shaft assembly, a first end of the flexible shaft assembly is connected to the second worm of the worm gear double worm assembly, and a second end of the flexible shaft assembly is connected to the first transmission assembly.

[0021] Preferably, the flexible shaft assembly comprises a flexible shaft body, a first joint and a first fixing seat arranged on a first end of the flexible shaft body, and a second joint and a second fixing seat arranged on a second end of the flexible shaft body;

[0022] The first fixing seat is sleeved on the first end of the flexible shaft body and is used to be fixed on the first housing of the worm gear double worm assembly, and the first joint is connected to the second worm for power transmission;

[0023] The second fixing seat is sleeved on the second end of the flexible shaft body and is used to be fixed on the first transmission assembly. The second joint is connected to the first transmission assembly for power transmission.

[0024] Preferably, at least one of the first fixing seat and the second fixing seat is a first clamping seat;

[0025] The first clamping seat comprises a first main body seat, at least two connecting arms and a fixing ring;

[0026] The first main body seat is sleeved on the flexible shaft body, at least two connecting arms are arranged on the first main body seat at intervals along the circumference of the first main body seat, the fixing ring is installed on the at least two connecting arms, and the fixing ring cooperates with the at least two connecting arms to form a clamping position;

[0027] At least one of the first housing and the first transmission assembly is provided with a limiting protrusion;

[0028] The limiting protrusion matches the locking position.

[0029] Preferably, the limiting protrusion is a trapezoidal boss;

[0030] The circumferential dimension of the end of the trapezoidal boss away from the first clamping seat is smaller than the circumferential dimension of the end of the trapezoidal boss close to the first clamping seat.

[0031] Preferably, at least one of the first fixing seat and the second fixing seat is a second clamping seat;

[0032] The second clamping seat comprises a second main body seat, a first connecting portion extending from the second main body seat in an axial direction, and a first clamping portion extending from one end of the first connecting portion in a circumferential direction;

[0033] The second main body seat, the first connecting portion and the first clamping portion cooperate to form an L-shaped clamping groove;

[0034] A connecting seat arranged in the axial direction is provided on the end surface of at least one of the first housing and the first transmission assembly, and a clamping boss is provided on the connecting seat;

[0035] The second main body seat is sleeved outside the connecting seat, and the L-shaped clamping groove is clamped with the clamping boss.

[0036] Preferably, the second clamping seat further comprises a second clamping portion extending in a radial direction from the other side of the end of the first connecting portion;

[0037] An anti-drop boss is provided on the end surface corresponding to the connecting seat;

[0038] The second clamping portion matches the anti-slip boss.

[0039] Preferably, the first joint and the second joint are both square joints; the first housing and the first transmission assembly are both provided with internal spline structures; the edge distance of the square joint is smaller than the internal spline tooth bottom spacing and larger than the internal spline tooth top distance.

[0040] A pedal control system, comprising an accelerator pedal mechanism, a brake pedal mechanism and the transmission system;

[0041] The worm gear assembly of the transmission system is connected to the accelerator pedal mechanism, and the first transmission assembly of the transmission system is connected to the brake pedal mechanism.

[0042] A car comprises the pedal control system.

[0043] The worm gear and double worm assembly provided in the embodiment of the utility model can achieve the purpose of double transmission, and specifically includes a first housing, a first worm gear, a first worm, a second worm and a first transmission rod. During installation, the first housing is used as a reference part and can be installed on a driving motor or other supporting parts; the first worm wheel is installed in the first housing through a bearing or other connecting parts, and the first worm wheel can rotate; the first worm and the second worm are arranged in the first housing at intervals, so that the first worm is meshed with one side of the first worm wheel and the second worm is meshed with the other side of the first worm wheel. The rotation of the first worm can drive the first worm wheel to rotate, thereby driving the second worm to rotate, which is the first transmission path; the first transmission rod is installed in the first worm wheel, and when the first worm wheel rotates, the first transmission rod can be driven to move axially along the first worm wheel (axial telescopic movement), which is the second transmission path; the first worm is used to connect with the power source, the first transmission rod is used to connect with the first workpiece, and the second worm is used to connect with the second workpiece; the power source provides power to drive the first worm to rotate, which can drive the first worm wheel to rotate, thereby driving the second worm to rotate, so as to adjust the second workpiece, and at the same time, the rotation of the first worm wheel can drive the first transmission rod to move axially along the first worm wheel to adjust the first workpiece. Compared with existing transmission assemblies, the worm gear double-worm assembly can realize double transmission with one transmission assembly, has a simple structure layout, reduces costs, meets use requirements, and has broader application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0045] Figure 1 is a cross-sectional view of a worm gear and double worm assembly in one embodiment of the utility model;

[0046] Figure 2 It is an isometric view of a transmission system in one embodiment of the utility model;

[0047] Figure 3 It is an isometric view of a worm gear and single worm assembly in one embodiment of the utility model;

[0048] Figure 4 It is an isometric view of a first structure of a flexible shaft assembly in one embodiment of the utility model;

[0049] Figure 5 It is an assembly diagram of the third worm and the first joint in one embodiment of the utility model;

[0050] Figure 6 This is an isometric view of the first clamping seat in one embodiment of the utility model;

[0051] Figure 7 It is an isometric view of the third worm in one embodiment of the utility model;

[0052] Figure 8 is a cross-sectional view of a third worm in an embodiment of the utility model;

[0053] Fig. 9 It is a cross-sectional view of a worm gear and single worm assembly in one embodiment of the utility model;

[0054] Fig.10 It is an isometric view of a second structure of a flexible shaft assembly in one embodiment of the utility model;

[0055] Fig.11 It is an isometric view of a clamping boss in one embodiment of the utility model;

[0056] Fig.12 This is an isometric view of the second clamping seat in one embodiment of the utility model;

[0057] Fig.13 It is a schematic diagram of the installation of the second card seat in one embodiment of the utility model.

[0058] Among them, 1. worm gear and double worm assembly; 101. first housing; 102. first worm wheel; 103. first worm; 104. second worm; 105. first transmission rod; 2. drive motor; 3. worm gear and single worm assembly; 31. second housing; 32. second worm wheel; 33. third worm; 34. second transmission rod; 4. flexible shaft assembly; 41. flexible shaft body; 42. first clamping seat; 421. first main body seat; 422. connecting arm; 423. fixing ring; 43. second clamping seat; 431. second main body seat; 432. first connecting part; 433. first clamping part; 434. second clamping part; 44. first joint; 45. second joint; 5. limiting protrusion; 6. clamping boss; 7. anti-drop boss; 8. internal spline structure; 9. connecting seat. DETAILED DESCRIPTION

[0059] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0060] In the description of the present invention, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0061] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0062] The utility model embodiment provides a worm gear double worm assembly 1, referring to Figure 1 The worm gear double worm assembly 1 includes a first housing 101, a first worm wheel 102, a first worm 103, a second worm 104 and a first transmission rod 105; the first worm wheel 102 is rotatably mounted in the first housing 101; the first worm 103 and the second worm 104 are arranged in the first housing 101 at intervals, the first worm 103 is meshed with one side of the first worm wheel 102, and the second worm 104 is meshed with the other side of the first worm wheel 102; the first transmission rod 105 is installed in the first worm wheel 102, and the first transmission rod 105 can move axially along the first worm wheel 102; the first worm 103 is used to connect with the driving motor 2, the first transmission rod 105 is used to connect with the first workpiece, and the second worm 104 is used to connect with the second workpiece.

[0063] As an example, the worm gear double worm assembly 1 can achieve the purpose of dual transmission, and specifically includes a first housing 101, a first worm wheel 102, a first worm 103, a second worm 104 and a first transmission rod 105. During installation, the first housing 101 is used as a reference part, and can be installed on the drive motor 2 or on other supporting parts; the first worm wheel 102 is installed in the first housing 101 through a bearing or other connecting parts, and the first worm wheel 102 can rotate; the first worm 103 and the second worm 104 are arranged in the first housing 101 at intervals, so that the first worm 103 is meshed with one side of the first worm wheel 102, and the second worm 104 is meshed with the other side of the first worm wheel 102. In this way, the rotation of the first worm 103 can drive the first worm wheel 102 to rotate, thereby driving the second worm 104 to rotate. This is the first transmission path; the first transmission rod 105 is installed on the In the first worm gear 102, when the first worm gear 102 rotates, the first transmission rod 105 can be driven to move axially along the first worm gear 102 (axial telescopic movement), which is the second transmission path; the first worm 103 is used to connect with the power source, the first transmission rod 105 is used to connect with the first workpiece, and the second worm 104 is used to connect with the second workpiece; the power source provides power to drive the first worm 103 to rotate, which can drive the first worm gear 102 to rotate, thereby driving the second worm 104 to rotate, so as to adjust the second workpiece, and at the same time, the rotation of the first worm gear 102 can drive the first transmission rod 105 to move axially along the first worm gear 102, so as to adjust the first workpiece. Compared with the existing transmission assembly, the worm gear double worm assembly 1 can realize double transmission with one transmission assembly, has a simple structure, reduces costs, meets the use requirements, and has a wider application prospect.

[0064] The utility model embodiment provides a transmission system, referring to Figure 1 and Figure 2 , including a driving motor 2, a first transmission assembly and a worm gear double-worm assembly 1; the output end of the driving motor 2 is connected to the first worm 103 of the worm gear double-worm assembly 1; the first transmission assembly is connected to the second worm 104 of the worm gear double-worm assembly 1, and the first transmission assembly is used to be connected to the second workpiece.

[0065] As an example, the transmission system includes a drive motor 2 , a first transmission assembly and a worm gear assembly 1 ; the worm gear assembly 1 includes a first housing 101 , a first worm wheel 102 , a first worm 103 , a second worm 104 and a first transmission rod 105 . During installation, the first housing 101 is used as a reference part and can be installed on the driving motor 2; the first worm wheel 102 is installed in the first housing 101 through bearings or other connecting parts, and the first worm wheel 102 can rotate; the first worm 103 and the second worm 104 are arranged in the first housing 101 at intervals, so that the first worm 103 is meshed with one side of the first worm wheel 102, and the second worm 104 is meshed with the other side of the first worm wheel 102. In this way, the first worm 103 is rotated, which can drive the first worm wheel 102 to rotate, thereby driving the second worm 104 to rotate, which is the first transmission path; then the first transmission rod 105 is installed in the first worm wheel 102. When the first worm wheel 102 rotates, the first transmission rod 105 can be driven to move axially along the first worm wheel 102 (axial telescopic movement), which is the second transmission path. The drive motor 2 is a single-head motor, and the output end of the drive motor 2 is connected to the first worm 103 of the worm-gear double-worm assembly 1; connected to the second worm 104 of the worm-gear double-worm assembly 1, the first transmission assembly is used to be connected to the second workpiece, and the first transmission rod 105 is used to connect to the first workpiece; the drive motor 2 provides power to drive the first worm 103 to rotate, which can drive the first worm wheel 102 to rotate, thereby driving the second worm 104 to rotate, and the first transmission assembly is used to adjust the second workpiece. At the same time, the rotation of the first worm wheel 102 can drive the first transmission rod 105 to move axially along the first worm wheel 102 to adjust the first workpiece. The combination of the drive motor 2 and the worm gear has been applied in many fields of motor transmission, but basically the drive motor 2 and the worm gear are one-to-one. If there are two transmission requirements in different positions or directions, two drive motors 2 are required to correspond, which increases the product cost and the difficulty of arrangement. The worm gear double worm assembly 1 can realize dual transmission, has a simple structural layout, and reduces costs; at the same time, by using a drive motor 2, the worm gear double worm assembly 1 and the first transmission assembly, the two sets of transmission paths can be accurately synchronized to avoid the control deviation that may occur when controlling the two drive motors 2, meet the use requirements, and have broader application prospects.

[0066] In one embodiment, referring to Figure 3The first transmission assembly is a worm gear single worm assembly 3, which includes a second housing 31, a second worm wheel 32, a third worm 33 and a second transmission rod 34; the second worm wheel 32 is rotatably mounted in the second housing 31; the third worm 33 is arranged in the second housing 31 and meshes with one side of the second worm wheel 32; the second transmission rod 34 is installed in the second worm wheel 32, and the second transmission rod 34 can move axially along the second worm wheel 32; the third worm 33 is used to be connected to the second worm 104 of the worm gear double worm assembly 1, and the second transmission rod 34 is used to be connected to the second workpiece.

[0067] As an example, a structural form of the first transmission assembly is introduced. The first transmission assembly can adopt a worm gear single worm assembly 3, which includes a second housing 31, a second worm wheel 32, a third worm 33 and a second transmission rod 34. During installation, the second housing 31 is used as a supporting structure for installing the parts of the worm gear single worm; the second worm wheel 32 is installed in the second housing 31 through a bearing or other connecting parts, and the third worm 33 is arranged in the second housing 31 and meshes with one side of the second worm wheel 32. The rotation of the third worm 33 can drive the second worm wheel 32 to rotate; the second transmission rod 34 is installed in the second worm wheel 32, and the third worm 33 is connected to the second worm 104 of the worm gear double worm assembly 1. The second transmission rod 34 is used to connect with the second workpiece; when the second worm 104 of the worm gear double worm assembly 1 rotates, it can drive the third worm 33 to rotate, so as to drive the second worm wheel 32 to rotate, so as to drive the second transmission rod 34 to move axially along the second worm wheel 32 (axial telescopic movement), so as to adjust the second workpiece.

[0068] In one embodiment, the first transmission assembly is a gear and rack assembly, which includes a third housing, a gear and a rack; the gear is rotatably mounted on the third housing and connected to the second worm 104 of the worm gear assembly 1; the rack is movably mounted on the third housing, meshing with the gear, and used to be connected to the second workpiece.

[0069] As an example, another structural form of the first transmission assembly is introduced. The first transmission assembly can adopt a gear rack assembly, which includes a third housing, a gear and a rack. During installation, the third housing is used as a supporting structure for installing parts of the gear rack assembly; the gear is installed in the third housing through a bearing or other connecting parts, and is connected to the second worm 104 of the worm gear double worm assembly 1. The rack is movably installed on the third housing, meshed with the gear, and used to connect with the second workpiece; when the second worm 104 of the worm gear double worm assembly 1 rotates, it can drive the gear to rotate, so as to drive the rack to move on the third housing, so as to adjust the second workpiece.

[0070] In one embodiment, referring to Figure 4 and Fig.10The transmission system also includes a flexible shaft assembly 4, a first end of the flexible shaft assembly 4 is connected to the second worm 104 of the worm gear double worm assembly 1, and a second end of the flexible shaft assembly 4 is connected to the first transmission assembly.

[0071] As an example, the transmission system also includes a flexible shaft assembly 4. When installed, the first end of the flexible shaft assembly 4 is connected to the second worm 104 of the worm gear double worm assembly 1, and the second end of the flexible shaft assembly 4 is connected to the first transmission assembly. In this way, the drive motor 2 is provided to provide power to drive the first worm 103 to rotate, which can drive the first worm wheel 102 to rotate, thereby driving the second worm 104 to rotate. The first transmission assembly is driven to rotate by the flexible shaft assembly 4 to adjust the second workpiece. At the same time, the rotation of the first worm wheel 102 can drive the first transmission rod 105 to move axially along the first worm wheel 102 to adjust the first workpiece. In this example, the flexible shaft assembly 4 makes the transmission system more flexible and more efficient; the arrangement of the scheme realizes the synchronous transmission of different positions, which can be the transmission in the same direction or the transmission in the opposite direction, and has a wider range of applications.

[0072] In one embodiment, referring to Figure 3 , Figure 4 , Figure 5 , Fig. 9 and Fig.10 The flexible shaft assembly 4 includes a flexible shaft body 41, a first joint 44 and a first fixed seat arranged on the first end of the flexible shaft body 41, a second joint 45 and a second fixed seat arranged on the second end of the flexible shaft body 41; the first fixed seat is sleeved on the first end of the flexible shaft body 41, and is used to be fixed on the first housing 101 of the worm gear double worm assembly 1, and the first joint 44 is connected to the second worm 104 for power transmission; the second fixed seat is sleeved on the second end of the flexible shaft body 41, and is used to be fixed on the first transmission assembly, and the second joint 45 is connected to the first transmission assembly for power transmission.

[0073] As an example, the flexible shaft assembly 4 includes a flexible shaft body 41, a first joint 44 and a first fixed seat, a second joint 45 and a second fixed seat; the flexible shaft body 41 serves as a connecting body, and the length and specifications of the flexible shaft body 41 can be selected according to actual needs, for example, a wire rope or other structure can be used; the first joint 44 is arranged on the first end of the flexible shaft body 41, and is connected to the second worm 104. When the second worm 104 rotates, the flexible shaft body 41 can be driven to rotate through the first joint 44 to transmit power; the first fixed seat is mounted on the first end of the flexible shaft body 41, and is used to be fixed on the first housing 101 of the worm gear and double worm assembly 1, so as to fix the first end of the flexible shaft assembly 4 on the worm gear and double worm assembly 1, thereby facilitating the installation and disassembly of the first end of the flexible shaft assembly 4. The second joint 45 is arranged on the second end of the flexible shaft body 41 and is connected to the first transmission assembly, specifically connected to the third worm 33. When the flexible shaft body 41 rotates, the third worm 33 can be driven to rotate through the second joint 45 to transmit power; the second fixed seat is sleeved on the second end of the flexible shaft body 41, and is used to be fixed on the first shell 101 of the worm gear and double worm assembly 1, so as to fix the first end of the flexible shaft assembly 4 on the first transmission assembly, specifically fixed on the second shell 31, to facilitate the installation and disassembly of the second end of the flexible shaft assembly 4.

[0074] In one embodiment, referring to Figure 6 and Fig. 9 At least one of the first fixed seat and the second fixed seat is a first clamping seat 42; the first clamping seat 42 includes a first main body seat 421, at least two connecting arms 422 and a fixing ring 423; the first main body seat 421 is sleeved on the flexible shaft body 41, at least two connecting arms 422 are arranged on the first main body seat 421 along the circumferential interval of the first main body seat 421, and the fixing ring 423 is installed on the at least two connecting arms 422, and the fixing ring 423 cooperates with the at least two connecting arms 422 to form a clamping position; a limiting protrusion 5 is provided on at least one of the first shell 101 and the first transmission assembly; the limiting protrusion 5 matches the clamping position.

[0075] As an example, the first structural form of the fixing seat, i.e., the first clamping seat 42, is introduced. At least one of the first fixing seat and the second fixing seat is the first clamping seat 42; the first clamping seat 42 includes a first main body seat 421, at least two connecting arms 422 and a fixing ring 423. During installation, the first main body seat 421 is mounted on the flexible shaft body 41, at least two connecting arms 422 are arranged on the first main body seat 421 along the circumferential interval of the first main body seat 421, and the fixing ring 423 is installed on the at least two connecting arms 422. At this time, the fixing ring 423 cooperates with the at least two connecting arms 422 to form a clamping position; a limiting protrusion 5 is provided on at least one of the first housing 101 and the first transmission assembly; the limiting protrusion 5 matches the clamping position, so that it is easy to install and disassemble the fixing seat, ensure the reliability of installation, and provide convenience for the installation and disassembly of the flexible shaft assembly 4. Among them, the fixing ring 423 can be set as a waist-shaped fixing ring, which can produce deformation in the circumferential direction and is easy to assemble.

[0076] In one embodiment, referring to Fig. 9 , the limiting protrusion 5 is set as a trapezoidal boss; the circumferential dimension of the trapezoidal boss away from one end of the first clamping seat 42 is smaller than the circumferential dimension of the trapezoidal boss close to one end of the first clamping seat 42.

[0077] As an example, during assembly, the fixing ring 423 can be deformed in the circumferential direction. The limiting protrusion 5 is set to a trapezoidal boss. The circumferential dimension of the end of the trapezoidal boss away from the first clamping seat 42 is smaller than the circumferential dimension of the end of the trapezoidal boss close to the first clamping seat 42. This makes it easy to assemble. After assembly, the circumferential dimension of the end of the trapezoidal boss close to the first clamping seat 42 is larger, and the fixing ring 423 is fixed in place and will not fall out.

[0078] In one embodiment, referring to Fig.10 , Fig.11 , Fig.12 and Fig.13 At least one of the first fixed seat and the second fixed seat is a second clamping seat 43; the second clamping seat 43 includes a second main body seat 431, a first connecting portion 432 extending from the second main body seat 431 in an axial direction, and a first clamping portion 433 extending from the end side of the first connecting portion 432 in a circumferential direction; the second main body seat 431, the first connecting portion 432 and the first clamping portion 433 cooperate to form an L-shaped clamping groove; a connecting seat 9 arranged in an axial direction is provided on the end face of at least one of the first shell 101 and the first transmission assembly, and a clamping boss 6 is provided on the connecting seat 9; the second main body seat 431 is sleeved outside the connecting seat 9, and the L-shaped clamping groove is clamped with the clamping boss 6.

[0079] As an example, the second structural form of the fixed seat, namely the second clamping seat 43, is introduced, and at least one of the first fixed seat and the second fixed seat is the second clamping seat 43. The second clamping seat 43 includes a second main body seat 431, a first connecting portion 432 and a first clamping portion 433; the second main body seat 431 is installed on the flexible shaft body 41, the first connecting portion is extended from the second main body seat 431 in the axial direction, the first clamping portion 433 is extended from the end side of the first connecting portion 432 in the circumferential direction, and the second main body seat 431, the first connecting portion 432 and the first clamping portion 433 cooperate to form an L-shaped clamping groove. A connecting seat 9 arranged in the axial direction is provided on the end surface of at least one of the first housing 101 and the first transmission assembly, and a clamping boss 6 is provided on the connecting seat 9. The connecting seat 9 here can be a tubular structure so that the first joint 44 or the second joint 45 is inserted therein, and the outer wall of the connecting seat 9 is provided with a clamping boss 6, which is used to cooperate with the L-shaped clamping groove in the second clamping seat 43 to achieve the clamping of the two. By adopting a rotating quick-insert structure, the L-shaped clamping groove is clamped with the clamping boss 6, so that the fixing seat can be installed and disassembled, the installation reliability is ensured, and the installation and disassembly of the flexible shaft assembly 4 is convenient. Among them, the L-shaped clamping groove can be set to one or more, and the multiple L-shaped clamping grooves are arranged at intervals along the circumferential direction of the second main body seat 431. It is also necessary to arrange multiple clamping bosses 6 at intervals along the circumferential direction on the corresponding connecting seat 9. The L-shaped clamping grooves and the clamping bosses 6 are clamped one by one, so as to realize the installation and disassembly of the fixing seat and ensure the installation reliability.

[0080] In one embodiment, referring to Fig.11 , Fig.12 and Fig.13 The second clamping seat 43 also includes a second clamping portion 434 extending in the radial direction from the other side of the end of the first connecting portion 432; an anti-slip boss 7 is provided on the end surface corresponding to the connecting seat 9; and the second clamping portion 434 matches the anti-slip boss 7.

[0081] As an example, during the design, the second clamping seat 43 also includes a second clamping portion 434 extending in a radial direction from the other side of the end of the first connecting portion 432; an anti-slip boss 7 corresponding to the clamping boss 6 is provided on the end face of at least one of the first shell 101 and the first transmission assembly; the second clamping portion 434 matches the anti-slip boss 7, which can block the rotation of the second main body seat 431 and prevent the clamping boss 6 from being separated from the clamping groove 432, thereby playing an anti-slip effect.

[0082] For example, a single bevel boss, i.e., an anti-slip boss 7, is arranged at intervals of 120° on the end faces of at least one of the first housing 101 and the first transmission assembly, and three small bosses, i.e., snap-on bosses 6, are arranged at offset positions on the side of the connecting seat 9. The snap-on bosses 6 can be set to any shape of a circle, an ellipse, or a mushroom head. Three L-shaped snap-on grooves are designed on the second main body seat 431 corresponding to the three small bosses. The three are rotated to correspond to the three small bosses, and the second main body seat 431 is pushed. When the second main body seat 431 is pushed to the end faces of at least one of the first housing 101 and the first transmission assembly, the second main body seat 431 is rotated again to rotate along the single bevel boss until it falls to one side of the vertical surface of the single bevel boss, and the second main body seat 431 is assembled in place. This quick-insert structure is easy to assemble and anti-slip, and the three small bosses arranged at offset positions on the side can effectively eliminate the axial clearance.

[0083] In one embodiment, referring to Figure 5 , Figure 7 and Figure 8 The first joint 44 and the second joint 45 are both square joints; the first housing 101 and the first transmission assembly are both provided with an internal spline structure 8; the edge distance of the square joint is less than the internal spline tooth bottom distance and greater than the internal spline tooth top distance.

[0084] As an example, during the design, the first joint 44 and the second joint 45 are both square joints; the first housing 101 and the first transmission assembly are both provided with an internal spline structure 8; the edge distance of the square joint is smaller than the internal spline tooth bottom spacing and larger than the internal spline tooth top distance, so that the square plug can be easily inserted into the internal spline structure 8, and the flexible shaft body 41 will not slip when rotating but will rotate with the rotation, which is convenient for transmitting power.

[0085] The embodiment of the utility model provides a pedal control system, including an accelerator pedal mechanism, a brake pedal mechanism and a transmission system; the worm gear double worm assembly 1 of the transmission system is connected to the accelerator pedal mechanism, and the first transmission assembly of the transmission system is connected to the brake pedal mechanism.

[0086] As an example, the pedal control system includes an accelerator pedal mechanism, a brake pedal mechanism and a transmission system; the accelerator pedal mechanism is the first workpiece, the brake pedal mechanism is the second workpiece, and the transmission system includes a drive motor 2, a first transmission assembly and a worm gear double worm assembly 1; the worm gear double worm assembly 1 includes a first housing 101, a first worm wheel 102, a first worm 103, a second worm 104 and a first transmission rod 105. During installation, the first housing 101 is used as a reference part and can be installed on the driving motor 2; the first worm wheel 102 is installed in the first housing 101 through bearings or other connecting parts, and the first worm wheel 102 can rotate; the first worm 103 and the second worm 104 are arranged in the first housing 101 at intervals, so that the first worm 103 is meshed with one side of the first worm wheel 102, and the second worm 104 is meshed with the other side of the first worm wheel 102. In this way, the first worm 103 is rotated, which can drive the first worm wheel 102 to rotate, thereby driving the second worm 104 to rotate, which is the first transmission path; then the first transmission rod 105 is installed in the first worm wheel 102. When the first worm wheel 102 rotates, the first transmission rod 105 can be driven to move axially along the first worm wheel 102 (axial telescopic movement), which is the second transmission path. The drive motor 2 is a single-head motor, and the output end of the drive motor 2 is connected to the first worm 103 of the worm-gear double-worm assembly 1; the first transmission assembly is connected to the second worm 104 of the worm-gear double-worm assembly 1, specifically the third worm 33 is connected to the second worm 104, the first transmission rod 105 is connected to the accelerator pedal mechanism, and the second transmission rod 34 is connected to the brake pedal mechanism; the drive motor 2 provides power to drive the first worm 103 to rotate, which can drive the first worm wheel 102 to rotate, thereby driving the second worm 104 to rotate, the second worm 104 drives the third worm 33 to rotate, and the third worm 33 drives the second worm wheel 32 to rotate, so as to drive the second transmission rod 34 to move along the axial direction of the second worm wheel 32, so as to adjust the brake pedal mechanism, and at the same time, the rotation of the first worm wheel 102 can drive the first transmission rod 105 to move along the axial direction of the first worm wheel 102 to adjust the accelerator pedal mechanism. The combination of the drive motor 2 and the worm gear has been applied in many fields of motor transmission, but basically the drive motor 2 and the worm gear are one-to-one matching. If there are transmission requirements at two different positions or in different directions, two corresponding drive motors 2 are required, which increases the product cost and the difficulty of layout. The worm gear double-worm assembly 1 can realize dual transmission, with a simple structural layout and reduced cost. At the same time, by using a drive motor 2, a worm gear double-worm assembly 1 and a first transmission assembly, the two sets of transmission paths can be accurately synchronized to avoid possible control deviations caused by the control of the two drive motors 2, meet the use requirements, and have broader application prospects.

[0087] An embodiment of the utility model provides a car, comprising a pedal control system.

[0088] As an example, the pedal control system includes an accelerator pedal mechanism, a brake pedal mechanism and a transmission system; the accelerator pedal mechanism is the first workpiece, the brake pedal mechanism is the second workpiece, and the transmission system includes a drive motor 2, a first transmission assembly and a worm gear double worm assembly 1; the worm gear double worm assembly 1 includes a first housing 101, a first worm wheel 102, a first worm 103, a second worm 104 and a first transmission rod 105. During installation, the first housing 101 is used as a reference part and can be installed on the driving motor 2; the first worm wheel 102 is installed in the first housing 101 through bearings or other connecting parts, and the first worm wheel 102 can rotate; the first worm 103 and the second worm 104 are arranged in the first housing 101 at intervals, so that the first worm 103 is meshed with one side of the first worm wheel 102, and the second worm 104 is meshed with the other side of the first worm wheel 102. In this way, the first worm 103 is rotated, which can drive the first worm wheel 102 to rotate, thereby driving the second worm 104 to rotate, which is the first transmission path; then the first transmission rod 105 is installed in the first worm wheel 102. When the first worm wheel 102 rotates, the first transmission rod 105 can be driven to move axially along the first worm wheel 102 (axial telescopic movement), which is the second transmission path. The drive motor 2 is a single-head motor, and the output end of the drive motor 2 is connected to the first worm 103 of the worm-gear double-worm assembly 1; the first transmission assembly is connected to the second worm 104 of the worm-gear double-worm assembly 1, specifically the third worm 33 is connected to the second worm 104, the first transmission rod 105 is connected to the accelerator pedal mechanism, and the second transmission rod 34 is connected to the brake pedal mechanism; the drive motor 2 provides power to drive the first worm 103 to rotate, which can drive the first worm wheel 102 to rotate, thereby driving the second worm 104 to rotate, the second worm 104 drives the third worm 33 to rotate, and the third worm 33 drives the second worm wheel 32 to rotate, so as to drive the second transmission rod 34 to move along the axial direction of the second worm wheel 32, so as to adjust the brake pedal mechanism, and at the same time, the rotation of the first worm wheel 102 can drive the first transmission rod 105 to move along the axial direction of the first worm wheel 102 to adjust the accelerator pedal mechanism. The combination of the drive motor 2 and the worm gear has been applied in many fields of motor transmission, but basically the drive motor 2 and the worm gear are one-to-one matching. If there are transmission requirements at two different positions or in different directions, two corresponding drive motors 2 are required, which increases the product cost and the difficulty of layout. The worm gear double-worm assembly 1 can realize dual transmission, with a simple structural layout and reduced cost. At the same time, by using a drive motor 2, a worm gear double-worm assembly 1 and a first transmission assembly, the two sets of transmission paths can be accurately synchronized to avoid possible control deviations caused by the control of the two drive motors 2, meet the use requirements, and have broader application prospects.

[0089] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention.

Claims

1. A worm gear double worm assembly, characterized in that: It includes a first housing, a first worm wheel, a first worm, a second worm and a first transmission rod; The first worm gear is rotatably mounted in the first housing; The first worm and the second worm are arranged in the first housing at intervals, the first worm is meshed with one side of the first worm wheel, and the second worm is meshed with the other side of the first worm wheel; The first transmission rod is installed in the first worm gear, and the first transmission rod can move axially along the first worm gear; The first worm is used to be connected to a driving motor, the first transmission rod is used to be connected to a first workpiece, and the second worm is used to be connected to a second workpiece.

2. A transmission system, characterized in that: It comprises a driving motor, a first transmission assembly and the worm gear double worm assembly according to claim 1; The output end of the driving motor is connected to the first worm of the worm gear double worm assembly; The first transmission assembly is connected to the second worm of the worm gear double worm assembly, and the first transmission assembly is used to be connected to the second workpiece.

3. The transmission system according to claim 2, characterized in that: The first transmission assembly is a worm gear single worm assembly, and the worm gear single worm assembly includes a second housing, a second worm gear, a third worm and a second transmission rod; The second worm gear is rotatably mounted in the second housing; The third worm is disposed in the second housing and meshes with one side of the second worm wheel; The second transmission rod is installed in the second worm gear, and the second transmission rod can move axially along the second worm gear; The third worm is used to be connected to the second worm of the worm gear double worm assembly, and the second transmission rod is used to be connected to the second workpiece.

4. The transmission system according to claim 2, characterized in that: The first transmission assembly is a gear rack assembly, and the gear rack assembly includes a third housing, a gear and a rack; The gear is rotatably mounted on the third housing and connected to the second worm of the worm gear double worm assembly; The rack is movably mounted on the third housing, meshed with the gear, and used to be connected to the second workpiece.

5. The transmission system according to claim 2, characterized in that: The transmission system further comprises a flexible shaft assembly, a first end of which is connected to the second worm of the worm gear double worm assembly, and a second end of which is connected to the first transmission assembly.

6. The transmission system according to claim 5, characterized in that: The flexible shaft assembly comprises a flexible shaft body, a first joint and a first fixing seat arranged on a first end of the flexible shaft body, and a second joint and a second fixing seat arranged on a second end of the flexible shaft body; The first fixing seat is sleeved on the first end of the flexible shaft body and is used to be fixed on the first housing of the worm gear double worm assembly, and the first joint is connected to the second worm for power transmission; The second fixing seat is sleeved on the second end of the flexible shaft body and is used to be fixed on the first transmission assembly. The second joint is connected to the first transmission assembly for power transmission.

7. The transmission system according to claim 6, characterized in that: At least one of the first fixing seat and the second fixing seat is a first clamping seat; The first clamping seat comprises a first main body seat, at least two connecting arms and a fixing ring; The first main body seat is sleeved on the flexible shaft body, at least two connecting arms are arranged on the first main body seat at intervals along the circumference of the first main body seat, the fixing ring is installed on the at least two connecting arms, and the fixing ring cooperates with the at least two connecting arms to form a clamping position; At least one of the first housing and the first transmission assembly is provided with a limiting protrusion; The limiting protrusion matches the locking position.

8. The transmission system according to claim 7, characterized in that: The limiting protrusion is a trapezoidal boss; The circumferential dimension of the end of the trapezoidal boss away from the first clamping seat is smaller than the circumferential dimension of the end of the trapezoidal boss close to the first clamping seat.

9. The transmission system according to claim 6, characterized in that: At least one of the first fixing seat and the second fixing seat is a second clamping seat; The second clamping seat comprises a second main body seat, a first connecting portion extending from the second main body seat in an axial direction, and a first clamping portion extending from one end of the first connecting portion in a circumferential direction; The second main body seat, the first connecting portion and the first clamping portion cooperate to form an L-shaped clamping groove; A connecting seat arranged in the axial direction is provided on the end surface of at least one of the first housing and the first transmission assembly, and a clamping boss is provided on the connecting seat; The second main body seat is sleeved outside the connecting seat, and the L-shaped clamping groove is clamped with the clamping boss.

10. The transmission system according to claim 9, characterized in that: The second clamping seat further includes a second clamping portion extending in a radial direction from the other side of the end of the first connecting portion; An anti-drop boss is provided on the end surface corresponding to the connecting seat; The second clamping portion matches the anti-slip boss.

11. The transmission system according to claim 7, characterized in that: The first joint and the second joint are both square joints; the first housing and the first transmission assembly are both provided with internal spline structures; the edge distance of the square joint is smaller than the internal spline tooth bottom spacing and larger than the internal spline tooth top distance.

12. A pedal control system, characterized in that: A transmission system comprising an accelerator pedal mechanism, a brake pedal mechanism and any one of claims 2 to 11; The worm gear assembly of the transmission system is connected to the accelerator pedal mechanism, and the first transmission assembly of the transmission system is connected to the brake pedal mechanism.

13. A car, characterized in that: Includes the pedal control system as claimed in claim 12.

Images